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69 lines
2.4 KiB
Python
69 lines
2.4 KiB
Python
8 years ago
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#!/usr/bin/env python
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# encoding: utf-8
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"""Common functionality of the snippet parsing codes."""
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from UltiSnips.position import Position
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from UltiSnips.snippet.parsing._lexer import tokenize, TabStopToken
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from UltiSnips.text_objects import TabStop
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from UltiSnips.text_objects import Mirror
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from UltiSnips.snippet.parsing._lexer import MirrorToken
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def resolve_ambiguity(all_tokens, seen_ts):
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"""$1 could be a Mirror or a TabStop.
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This figures this out.
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"""
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for parent, token in all_tokens:
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if isinstance(token, MirrorToken):
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if token.number not in seen_ts:
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seen_ts[token.number] = TabStop(parent, token)
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else:
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Mirror(parent, seen_ts[token.number], token)
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def tokenize_snippet_text(snippet_instance, text, indent,
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allowed_tokens_in_text, allowed_tokens_in_tabstops,
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token_to_textobject):
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"""Turns 'text' into a stream of tokens and creates the text objects from
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those tokens that are mentioned in 'token_to_textobject' assuming the
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current 'indent'.
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The 'allowed_tokens_in_text' define which tokens will be recognized
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in 'text' while 'allowed_tokens_in_tabstops' are the tokens that
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will be recognized in TabStop placeholder text.
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"""
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seen_ts = {}
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all_tokens = []
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def _do_parse(parent, text, allowed_tokens):
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"""Recursive function that actually creates the objects."""
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tokens = list(tokenize(text, indent, parent.start, allowed_tokens))
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for token in tokens:
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all_tokens.append((parent, token))
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if isinstance(token, TabStopToken):
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ts = TabStop(parent, token)
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seen_ts[token.number] = ts
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_do_parse(ts, token.initial_text,
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allowed_tokens_in_tabstops)
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else:
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klass = token_to_textobject.get(token.__class__, None)
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if klass is not None:
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klass(parent, token)
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_do_parse(snippet_instance, text, allowed_tokens_in_text)
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return all_tokens, seen_ts
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def finalize(all_tokens, seen_ts, snippet_instance):
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"""Adds a tabstop 0 if non is in 'seen_ts' and brings the text of the
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snippet instance into Vim."""
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if 0 not in seen_ts:
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mark = all_tokens[-1][1].end # Last token is always EndOfText
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m1 = Position(mark.line, mark.col)
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TabStop(snippet_instance, 0, mark, m1)
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snippet_instance.replace_initial_text()
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